Automatic gain control method and apparatus for voice interaction system, and system

A voice interaction system, comprising:

• a memory and a processor;
• wherein the memory is configured to store instructions;
• the processor, when invoking the instructions, executes an automatic gain control method for the voice interaction system, the method comprising:
• receiving a voice signal;
• dividing the received voice signal into a plurality of sound signals of different sound sources by blind source separation;
• invoking a pre-trained wake-up word detection model to perform wake-up word detection on the sound signals of different sound sources respectively, to determine a sound signal in which a wake-up word is detected;
• and
• for each of the plurality of sound signals of different sound sources, using the sound signal in which the wake-up word is detected as an adjustment reference for performing automatic gain control, calculating a gain required for automatic gain control of the voice interaction system, to adjust a volume of picked-up audio data within a preset range.

A non-transitory computer-readable storage medium comprising instructions that, when executed, implement an automatic gain control method for a voice interaction system, the method comprising:

• receiving a voice signal;
• dividing the received voice signal into a plurality of sound signals of different sound sources by blind source separation;
• invoking a pre-trained wake-up word detection model to perform wake-up word detection on the sound signals of different sound sources respectively, to determine a sound signal in which a wake-up word is detected;
• and
• for each of the plurality of sound signals of different sound sources, using the sound signal in which the wake-up word is detected as an adjustment reference for performing automatic gain control, calculating a gain required for automatic gain control of the voice interaction system, to adjust a volume of picked-up audio data within a preset range.